21712470

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55673}}^1$

素因数の和:55696

約数の個数: 32

約数和(自身を含む): 56119392

約数和(自身を除く): 34406922

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55673, 111346, 167019, 278365, 334038, 556730, 723749, 835095, 1447498, 1670190, 2171247, 3618745, 4342494, 7237490, 10856235, 21712470]

約数ペア:

[(1, 21712470), (2, 10856235), (3, 7237490), (5, 4342494), (6, 3618745), (10, 2171247), (13, 1670190), (15, 1447498), (26, 835095), (30, 723749), (39, 556730), (65, 334038), (78, 278365), (130, 167019), (195, 111346), (390, 55673)]